Lakhi, K.S.Singh, G.Kim, S.Baskar, A.V.Joseph, S.Yang, J.H.Ilbeygi, H.Ruban, S.J.M.Vu, V.T.H.Vinu, A.2025-12-182025-12-182018Microporous and Mesoporous Materials, 2018; 267:134-1411387-18111873-3093https://hdl.handle.net/11541.2/131579Data source: Supplementary data, https://doi.org/10.1016/j.micromeso.2018.03.024CuOx loaded mesoporous silicas with highly ordered mesoporous structures (Cu-SBA-15) and different silicon to copper ratios were synthesized by using P123 as a template under mild acidic conditions. XRD and N 2 sorption results confirm the well-ordered 2D mesoporous structure with a high specific surface area and a large pore volume. The pore diameter of Cu-SBA-15 increases from 7.9 to 8.5 nm with a concomitant decrease of the specific surface area from 865 to 802 m 2 /g as the amount of Cu in the silica framework is increased. We also show the introduction of Cu in the SBA-15 makes a significant change in the final morphology, which changes from rod to curve shaped morphology when the amount of Cu in the SBA-15 is increased. XRD results confirm the presence of CuO nanoparticles inside the nanochannels of SBA-15. The materials were used as adsorbents for high pressure CO 2 adsorption at different temperatures −5, 0, 10 and 25 °C and pressures up to 30 bar. The highest CO 2 adsorption of 27.6 mmol/g at −5 °C was achieved for Cu-SBA-15 sample with a n Si/Cu ratio of 5 and was found to be much higher than that of pure SBA-15 silica under similar conditions, illustrating the role of CuO x doping in the SBA-15 framework.enCrown Copyright 2018 Published by Elsevier Access Condition Notes: Accepted manuscript available after 1 April 2020CO2 adsorptionCu-SBA-15doughnut morphologyhigh pressureisosteric heatJournal article10.1016/j.micromeso.2018.03.0242-s2.0-85044525069